See also:

Impressive Warranty
Hyundai is Kia's corporate parent, so the Optima gets Hyundai's impressive warranty; it includes 10-year/100,000-mile powertrain protection and 5-year/60,000-mile roadside assistance. Kia is put ...

Cruise control system
The cruise control system allows you to program the vehicle to maintain a constant speed without resting your foot on the accelerator pedal. With cruise control, you can set and automatically mai ...

Rear differential (4WD)
Checking or changing rear differential fluid Have rear differential fluid checked or changed by an Authorized Kia Dealer according to the Maintenance Schedule at the beginning of this section. ...